Power shaft attachment for tractors



Jan. 1, 1952 E. H. BECCARD POWER SHAFT [ATTACHMENT FOR TRACTORS 3 Sheets-sheaf 1 Filed Sept. 6, 1950 ATTORNEYS Jan. 1, 1952 E. H. BECCARD POWER SHAFT ATTACHMENT FOR TRACTORS 3 Sheets-Sheet 2 Filed Sept. 6, 1950 INVENTOR ATTORNEYS Jan. 1, 1952 E. H BECCARD POWER SHAFT ATTACHMENT FOR TRACTORS 3 Sheets-Sheet 3 Filed Sept. 6, 1950 INVENTOR ATTORNEYS.

Patented Jan. 1, 1952 UNITED STATES PATENT o FrlcE 'mtnoroa Eldon fieccara. Nebraska i lity, lielm npnlleatan "Se tember 6, rest, serial their invention relates to a power shattattach ment for tractors, and aims to provide apower saw which may be readily and easily attached to a tractor utilizing power from the usual power take-off shaft of a tractor, to operate the saw,

properly adjusted, the torque on the housing will be stabilized, while the attachment still'niaintains complete flexibility in any direction.

Still another object of the invention isito provide a guide limiting horizontal movementof the attachment supported on the drawbar and to provide special control bars for support and for limitation of the vertical movement of the attachment.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel detailsof construction and combinations of parts, hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in thej construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing:

Figure 1 is a perspective view illustrating an attachment constructed in accordance with the invention as mounted on a tractor and illustrating the position of the saw disc in fallinga tree.

Fig. 2 is an enlarged plan .view of the attachment.

Fig. 3 is an elevational view of the bolt attachment clamp. 1

Fig. 4 is an edge elevational view thereof.

*Fig. 5 is a perspective view looking at one end of ithe tractor equipped with the attachmenti Fig. 6 is a sectional view taken on line}; oiv Fig. 2.

Fig. 7 is a perspective view of the connecting plate used in connection with the power take-off shaft of the tractor.

Referring to the drawings in detail, the reference character 5 indicates a tractor of a conventional structure, which is provided with the usual power take-off shaft that extends rearwardly from the tractor, through an opening in the tractor casing, shown at A.

i claim. (or m -4t) Mounted at the rear of the tractor, is a sup porting frame embedying "side members 6.- con-*- nected at their outer endear means *of the ear which is pivotally connected between the side memters 6. Elevating control bars. 8 connect the bar 1 and extend- "to a point adjacent to the rear er the tractor to limit the degree to which the vertically adjustable frame can be lifted.

Connected with the frame '6 are the arms "9 that 'elrten'dforwardly where they connect with the lifting arm in of the tractor, whereby move; ment "er the liiti'ng arm f0 raiseinr -'lower the name.

The attachment includes the plate 'H which is formed with an opening 12, the plate having openings l3 tnreugn seeming 'lfic ilts' or screws may be extended to secure the plate directly over the opening in the tractor casing through which the usual power take-ofi shaft of the tractor extends.

The reference character l4 indicates the universal joint section which is fitted in the opening I2 and which is held in place by means of the adjustable clamp l5 which is in the form of a split band which is tightened around the universal joint section by means of the bolt l6, which passes through ears I! formed at the ends of the split band.

Tubular guides l8 are formed on the adjustable clamp l5 and these guides align with the threaded openings 19 formed in the blocks 20 that are mounted on the outer side of the plate ll. Thus it will be seen that when bolts are positioned in the aligning openings I9 and tubular guides l8, the universal joint section M will be held stationary.

The section I4 has extensions formed with bearing openings in whichjthe bearings 22 of the swivel ring 23 operate, the swivel ring 23 having bearings 24 extending laterally therefrom. which bearings extend into bearing openings formed in the arms 25 to which the tubular shaft housing is secured at one of its ends. The torque tube 26 connects with the plate 21 to which the gear housing 28 is connected.

The reference character 29 indicates a socket member which is fitted over one end of the power take-on shaft of the tractor with which the attachment is used, the socket member being splined on the shaft and secured against rotation with respect to the shaft.

This socket member 29 has connection with the power shaft 30, through the universal coupling 3|, the shaft 30 extending into the gear housing 28 where it is supplied with the pinion 32 that meshes with the pinion 33 of the shaft 34. The shaft 34 extends through one side of the housing 28 and provides a support for the saw 35 which is shown as bolted thereto by means of the bolts 36.

Secured to one end of the housing 28 by means of the plate 31, is the bar 31 to which the handle 38 is connected so that the operation of the saw may be controlled by the operator manipulating the bar 31 by the handle 38.

When the device is to be used in falling trees,

it is adjusted so that the saw blade 35 operatesin a horizontal plane, as shown by Fig. 1. However, when it is desired to use the saw for buck sawing the handle is rotated to cause the saw 4 having a power take-01f shaft and power operated lifting mechanism, comprising a vertically swinging frame operated by said power operated lift, a torque tube, a plate secured to the tractor having an opening through which the power takeofi shaft of the tractor extends, blocks having threaded openings secured to the plate, an adjustable coupling band having tubular guides secured to the outer surface thereof aligning with the threaded'openings of the blocks, bolts disposed within the aligning openings securing the coupling band to the plate, said coupling band embracing a universal joint section, said univer- Y sal joint section connecting said torque tube to disc to operate in a vertical plane, the takeoff mechanism operating the power shaft and saw as described.

It might be further stated that the elevation control bars 8 are provided with telescoping sections 39 to limit the upward movement of the attachment for the protection of the tractor, the operator and the attachment. Forming a part of the supporting-frame is an inverted U-shaped guide 4'0 under which the torque tube 26 operates the member 40 holding thestorque tube 26 against vertical movement, but allowing lateral pivotal movement of the torque tube,toalimited degree. 1 From the foregoing it is believed that the construction-and operation of applicants portable power saw will be obvious and that further description of the operation of the structure is unnecessary.

I claim: p v

A sawing machine attachment for a tractor the tractor, said torque tube resting on the vertically swinging frame, a gear housing secured to one end of the torque tube, a saw shaft having a saw secured'thereon, extending into the housing, gearing in the housing through which said saw shaft is rotated, and a handle secured to the gearhousing by means of which the gear housing and saw are operated;

ELDON H. BECCARD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,447,606 Seymour Mar. 6, 1923 2,105,030 Dunham Jan. 11, 1934 2,435,192 Arsneau Feb. 3, 1948 2,462,314 Fuqua Feb. 22, 1949 2,560,641 Goodlet -4--- July 17, 1951 

